We've decided it is best for our environment to move to a hosted Exchange and SharePoint and are currently looking for vendors for this migration. Our reasoning for this is the fact that we are a company of approximately 400 users that are dispersed around the World that rely on a team of four for IT support. We have been testing Office 365 and so far we've been very impressed with the overall performance and management capabilities within it.

My question is, is there any medium sized business who can provide a success story for choosing and moving to Office 365? This would help a lot in convincing upper management that Microsoft is the way to go for this transition.